Correct Answer:
(C)
When the object moves around the Earth with the velocity commensurate with the velocity of the earth such that it maintain a fixed position in relation to some place on the Earth.
When the object moves around the earth with the velocity commensurate with the velocity of the earth such that it maintain a fixed position in relation to some place on the earth, it is called geostatic position. All the geostationary satellite works on the same principle.
Ques:
2
In which atmospheric layer, the communication satellites are located?
Correct Answer:
(D)
Exosphere
Patterson divided the atmosphere into five layers - (1) Troposphere (0-18 km.), (2) Stratosphere (18-30 km.), (3) Mesosphere (30-80 km.), (4) Ionosphere (80-400 km.), (5) Exosphere (400 km and above). Air in the Exosphere is extremely thin in many ways. It is almost the same as the airless void of outer space and in this, the communication satellites are located.
Ques:
3
A geostationary satellite has a period of:
Correct Answer:
(D)
24 hours
The geostationary satellite has a same orbital period as the earth's rotation period i.e., 24 hours.
Ques:
4
Indian Satellite Series 'INSAT' is an example of:
Correct Answer:
(D)
Meteorological Satellite
INSAT is a series of multipurpose geostationary satellites launched by ISRO to fulfill the needs in the field of telecommunications, broadcasting, meteorology etc.
Ques:
5
Which of the following frequency bands is NOT used in INSAT/GSAT satellite communication?
Correct Answer:
(C)
MF
The major frequency bands used for satellite communication in India are S-band, C-band, Upper Extended C band, Ku band and Ka band. The INSAT/GSAT satellites carry transponders in these bands.
Ques:
6
For the measurement/estimation of which of the following are satellite images/remote sensing data used?
Chlorophyll content in the vegetation of a specific location.
Greenhouse gas emissions from rice paddies of a specific location.
Land surface temperatures of a specific location.
Select the correct answer using the code given below:
Correct Answer:
(D)
1, 2 and 3
For the measurement/estimation of chlorophyll content in the vegetation of a specific location (through hyper-spectral and multi-spectral imaging), greenhouse gas emissions from rice paddies of a specific location (through short wave infrared, thermal infrared and Merlin Lidar techniques) and land surface temperatures of a specific location (through thermal infrared etc.), satellite images/remote sensing data are used.
Ques:
7
GPS stands for which one of the following?
Correct Answer:
(C)
Global Positioning System
GPS means Global Positioning System, is a space-based navigation system. It was developed by the U.S. Department of defence. It became fully operational from 27th April, 1995.
Ques:
8
In which of the following areas can GPS technology be used?
Mobile phone operations.
Banking operations.
Controlling the power grids.
Select the correct answer using the codes given below:
Correct Answer:
(D)
1, 2 and 3
The Global Positioning System (GPS) is a satellite-based radio navigation system that provides geo-location and time information to a GPS receiver anywhere on or near the Earth. GPS technology is now in everything from cellphones and wristwatches to bulldozers, shipping containers and ATM's. Major communication networks, banking systems, financial market and power grids depend heavily on GPS for precise time synchronization.
Ques:
9
Match List- I with List- II and select the correct answer from the code given below the Lists:
List- I List- II
(Organisations) (Location)
Correct Answer:
(A)
ISRO 1. Thiruvananthapuram
Vikram Sarabhai Space Centre is located in Thiruvananthapuram, Kerala. ISRO's headquarter is located in Bengaluru, Karnataka. IUAC (Inter-University Accelerator Centre) is established in New Delhi. IUCA (Inter-University Centre for Astronomy and Astrophysics) is established in Pune, Maharashtra.
Ques:
10
Consider the following pairs:
ISRO Centres Location
Vikram Sarabhai Space Centre (VSSC) Trivandrum (Kerala)
UR Rao Satellite Centre (URSC) Bengaluru (Karnataka)
National Remote Sensing Centre (NRSC) Dehradun (Uttarakhand)
Indian Institute of Remote Sensing (IIRS) Hyderabad (Telangana)
Which of the above pairs are correctly matched?
Correct Answer:
(A)
A & B only
The Vikram Sarabhai Space Centre is situated at Trivandrum (Kerala) and UR Rao Satellite Centre is situated at Bengaluru (Karnataka). While the National Remote Sensing Centre is situated at Hyderabad (Telangana) and Indian Institute of Remote Sensing is situated at Dehradun (Uttarakhand). So, only A and B pairs are correctly matched.